this became a real issue in the campaign, when the president retroactively said no i always described it as a terror attack. "60 minutes" had that footage and they did not air it at the time. they did not air it when the debate broke out when the president this a terror attack. they withheld that from the public. i would say that's a direct violation of your duty as a journalist. >> maybe that's why they like going on there. >> alisyn: president obama has said that he likes the format of "60 minutes" he can give longer nuances answers rather than up against a three-minute break. what they are doing is sunday night is very interesting. sitting down with hillary clinton, secretary of state and president obama in first and only joint interview. why would they do that? let's listen to their motivation for why they are doing this together. >> why did you want to do this together, a joint interview? >> well, the main thing is i just wanted to have a chance to publicly say thank you because i think hillary will go down as one of the finest secretary of states we have had. it has been a great